Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.

Patents

  1. Advanced Patent Search
Publication numberUS5152613 A
Publication typeGrant
Application numberUS 07/674,647
Publication dateOct 6, 1992
Filing dateMar 22, 1991
Priority dateMar 22, 1991
Fee statusPaid
Also published asCA2063059A1, CA2063059C, DE69219655D1, DE69219655T2, EP0505068A2, EP0505068A3, EP0505068B1
Publication number07674647, 674647, US 5152613 A, US 5152613A, US-A-5152613, US5152613 A, US5152613A
InventorsF. John Herrington, Jr.
Original AssigneeMobil Oil Corporation
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Plastic film zipper bag having straightened heat seals
US 5152613 A
Abstract
In the manufacture of thermoplastic film zipper bags and the like heat sealing the film to the zipper produces a seal line that shrinks, resulting in unsightly apearance. A system and method are disclosed for restoring the shrunk seal line to its orginal length by corrugating and stretching it between mating teeth. A method is also disclosed for restretching the seal without corrugation.
Images(2)
Previous page
Next page
Claims(1)
What is claimed is:
1. A plastic film zipper bag wherein the zipper comprises a pair of extruded flexible plastic strips having reclosable interlocking profile elements in the form of rib and groove elements on the respective strips, each of the extruded strips including a thin fin section depending therefrom and heat sealed to the plastic film thereby causing the film to shrink along the line of the seal, the shrunk seal being selectively stretched back to the original length by pressing the seal between corrugating teeth thereby elongating the shrunk seal to the original length resulting in a straight seal with an embossed appearance of zipper teeth.
Description
BACKGROUND OF THE INVENTION

The present invention relates to improvements in the manufacture of plastic film zipper bags and the like and particularly to a method of straightening the zipper fin seal. Plastic zippers with or without sliders are well known in the art. The plastic zippers have profiles and include a pair of male and female fastener elements in the form of reclosable interlocking rib and groove elements. Where a slider is employed, the slider will open and close the rib and groove elements. In the manufacture of thermoplastic film bags, a pair of these male and female fastener elements extend along the mouth of the bags and these male and female elements are adapted to be secured in any suitable manner to the flexible walls of the thermoplastic film bags. While these elements may be integral marginal portions of such walls, the present invention is directed to bags where the zipper elements are extruded separately and thereafter are attached to the walls along the mouth of the bag. Examples of plastic film zipper bags of this type are disclosed in U.S. Pat. Nos. 3,173,184 and 3,259,951.

In the manufacture of plastic film zipper bags of the type having an integral plastic fin and zipper, the bag film is heat sealed to the fin of the zipper track. Normally, the thickness of the bag film is small (about 1.75 mil) compared to that of the fin (about 6 mil). The heating and melting causes the fin and the film to shrink along the line of the seal, as the orientation of the plastic is relaxed. This causes an unsightly appearance, with puckering of the adjacent material, and a bending downward of the top portion of the bag. It is difficult to prevent this shrinkage by process conditions.

It is an object of the present invention to overcome such shrinkage problem.

SUMMARY OF THE INVENTION

The present invention relates to the manufacture of plastic film zipper bags of the type having an integral plastic fin and zipper and specifically the method of heat sealing the fin to the plastic film thereby causing the fin and film to shrink along the line of the seal, cooling the seal area and thereafter stretching the seal along the line to the original length corresponding to the length of the film and zipper adjacent the seal area to thereby straighten the seal. In accordance with one aspect of the invention the shrunk seal is selectively stretched back to the original length by pressing the seal between corrugating teeth causing only the seal area to take a longer path thereby elongating the shrunk seal to the original length. In one form of the invention, the corrugating teeth are on reciprocating mating bars. In another form of the invention the corrugating teeth are on mating rotating disks.

In accordance With a further aspect of the invention the seal is stretched by passing the seal through successive nip wheels having the width of the seal with the second wheel running faster than the first. In accordance with another aspect of the invention the seal is stretched by passing the film between successive nip rolls running at the same speed as the film and between the rolls diverting the path of the seal to increase its path length as compared to the path length of the remainder of the film. In one form of the invention, the path length of the seal is increased by diverting the path of the seal over an idler roll having a circumferential portion engaging the seal of larger diameter than the remainder of the idler roll. In accordance with another form of the invention the path length of the seal is increased by pulling the seal over a plurality of fingers positioned to increase the path length of the seal as compared to the path length of the remainder of the film.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a diagrammatic view of a system for straightening the zipper fin seal in accordance with the present invention.

FIG. 1A is a view illustrating the effect of the shrinkage after the heat sealing of the zipper fin seal.

FIG. 1B is a view illustrating the zipper fin seal after straightening.

FIG. 2 is a diagrammatic view of a modification of the stretching station in the system illustrated in FIG. 1.

FIG. 3 is a diagrammatic view of another modification of the stretching station in the system for straightening the zipper fin seal illustrated in FIG. 1.

FIG. 4 is a diagrammatic view of a further modification of the stretching station in the system illustrated in FIG. 1.

FIG. 5 is a diagrammatic view of another modification of the stretching station in the system illustrated in FIG. 1.

PREFERRED EMBODIMENT OF THE INVENTION

Referring to FIG. 1 there is diagrammatically illustrated a system for straightening the zipper fin seal in accordance with the present invention. There is illustrated a profiled plastic reclosable fastener or zipper 10 particularly suited for use in connection with thermoplastic bags and the like. The zipper 10 is adapted to be assembled at the top edge or mouth of a thermoplastic bag. The bag may be made from any suitable thermoplastic film such for example as polyethylene or polypropylene or equivalent material. In the preferred form of the invention the bag is made from extruded polyethylene film having a thickness of about 1.75 mil and the zipper is made from extruded polyethylene with a fin having a thickness of about 6 mil.

The zipper 10 comprises a pair of flexible plastic strips 11 and 12 having separable plastic means extending along the length thereof comprising reclosable interlocking male and female profile elements in the form of rib and groove elements 13 and 14 on the respective strips. Each of the extruded strips 11 and 12 includes a thin fin section or portion 11a, 12a depending therefrom and which are adapted to be inserted between the spaced walls 15, 16 of a center folded thermoplastic film to form a web from which a plurality of bags are to be made. This creates a four-layer region at one edge of the web comprising film 15, fin 11a, fin 12a, and film 16. The web including the four-layer region is pulled (by means not shown) in the direction of the arrow through a heat sealing station including spaced hot air jets 17, 18 which weld the outer film layers 15 and 16 to the adjacent fins 11a and 12a along continuous seal lines S. A plate P is positioned between the fins at the sealing station to prevent fusing the fins to each other. The seals S of the web are then passed through a cooling station where they are cooled with chilled air jets 19 and 20.

The plastic fin portions 11a, 12a have a high machine direction orientation as they come from the zipper extrusion process. The application of heat to seal the film to the fin causes this orientation to relax resulting in undesirable shrinkage of the fins in the seal region S in the machine direction. This is illustrated in FIG. 1A where there is a puckering of the material adjacent the seal line S and a bending down of the zipper 10. To counter this effect, the seal S is stretched back to its original length after cooling by running it through a stretching station which includes a pair of mating spur gears 21, 22 having a width corresponding to the width of the seal line S. The gears 21, 22 each have a profile which engages the seal S including rounded teeth 21a, 22a to prevent damaging the film web and the fins along the seal line S. The result is a straight web with embossed appearance of zipper teeth T as illustrated in FIG. 1B.

Referring to FIG. 2 there is diagrammatically illustrated a modification of the stretching station in the system illustrated in FIG. 1. The heat sealing and cooling stations are the same as those illustrated in FIG. 1. The difference in the two systems is in the stretching station where the seal S is stretched along the seal line to the original length corresponding to the length of the film and zipper adjacent the seal area to thereby straighten the seal. At the stretching station the mating gear wheels 21 and 22 of the system shown in FIG. 1 have been replaced by mating gear racks 23 and 24 having meshing teeth 23a and 24a respectively. The seal S is stretched back to its original length after cooling by pressing it between the pair of mating gear racks 23 and 24. The gear racks are adapted for reciprocation toward and away from each other and the seal S is advanced intermittently between the gear racks 23 and 24. The teeth 23a and 24a on the gear racks have profiles which prevent damaging the film web and fins on the zipper. After the web passes through the gear racks 23, 24 at the stretching station, the result is a straightened web with embossed appearance of zipper teeth similar to that shown in FIG. 1B.

Referring to FIG. 3 there is diagrammatically illustrated another modification of the stretching station in the system for straightening the zipper fin seal illustrated in FIG. 1. The heat sealing station and the cooling station are the same as those illustrated in FIG. 1. The basic difference in the systems is at the stretching station. In the system of FIG. 3 after the film web and fins leave the heat sealing and cooling stations the seals S pass through successive nip wheels 25, 26. It will be noted that the nip wheels 25 and 26 have a width that corresponds to the width of the seal S. The second nip wheel 26 is driven at a faster speed than the first nip wheel 25 thereby stretching the seal S back to its original length. The result is a straight web similar to FIG. 1B but without the embossed appearance.

Referring to FIG. 4 there is diagrammatically illustrated a further modification of the stretching station in the system illustrated in FIG. 1. In this system the heat sealing station and the cooling station are the same as those illustrated in FIG. 1 and the change again is made only at the stretching station. In this system after the film web and fins leave the heat sealing and cooling stations they run between full-width nip rolls 27, 28 running at the same speed as the film. Between the nip rolls 27, 28 is an idler roll 29 which diverts the path of the seal S to increase its path length as compared to the path length of the remainder of the film. The length of the seal S is increased by diverting the path of the seal S over the idler roll 29 having a raised circumferential portion 29a engaging the seal S of a larger diameter than the remainder of the idler roll 29. This causes the seal S to stretch back to its original length resulting in a straight web similar to FIG. 1B but without the embossed appearance.

Referring to FIG. 5, there i diagrammatically illustrated another modification of the stretching station in the system illustrated in FIG. 1. In this system, the heat sealing station and the cooling station are the same as those illustrated in FIG. 1 and the change is made only at the stretching station. In this system after the film web and ends leave the heat sealing and cooling stations they run between full-width nip rolls 30 and 31 running at the same speed as the film. The nip rolls 30 and 31 are similar to the nip rolls 27 and 28 of FIG. 4. However, in place of the idler roll 29 of FIG. 4 there is positioned between the nip rolls 30 and 31 in FIG. 5 a pair of fingers 32 and 33 which divert the path of the seal S to increase its path length as compared to the path length of the remainder of the film. The length of the seal S is increased by diverting the path of the seal S over the fingers 32 and 33 which have a width corresponding to the width of the seal S. This causes the seal S to stretch back to its original length resulting in a straight web similar to FIG. 1b but without the embossed appearance.

It is to be understood that after the web has been straightened and leaves the stretching station of the system it is ready to be processed into completed bags with the conventional side seals. As pointed out above, the zipper may be provided with sliders such for example as disclosed in copending application Ser. No. 490,110 filed Mar. 7, 1990 for Rolling Action Zipper Profile and Slider Thereof assigned to the assignee of the present application.

While a preferred embodiment and certain modifications of the invention have been described and illustrated, it is to be understood that further modifications thereof may be made within the scope of the appended claims without departing from the spirit of the invention. For example while both of the seals S are illustrated as being stretched with each other, the seals S can be stretched individually by opening the zipper 10 and stretching each seal S at separate stretching stations. While the present invention has been described in connection with the manufacture of plastic film zipper bags, it is to be understood that the invention is applicable to other types of articles which have a plurality of flexible plastic layers to be heat sealed to each other where at least one of the layers has an orientation in the direction of the seal. In practicing the present invention, the at least one oriented layer is heat sealed to another of the layers thereby causing both layers to shrink along the line of the seal. The seal area is then cooled and thereafter the seal is stretched along the line to the original length corresponding to the length of the layers adjacent the seal area to thereby straighten the seal. The apparatus described and illustrated herein is suitable for practicing the method on other thermoplastic articles as well as plastic film zipper bags.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US3173184 *Sep 21, 1962Mar 16, 1965Ausnit StevenShaped head top closure
US3259951 *Jul 15, 1964Jul 12, 1966Merle A ZimmermanSlide fastener
US4479244 *Sep 30, 1982Oct 23, 1984Steven AusnitEasy opening bag
US4698118 *Jul 20, 1984Oct 6, 1987Minigrip, Inc.Apparatus for forming plastic fastener and plastic accessory strips and uniting the same with a film
US4976811 *Jul 12, 1988Dec 11, 1990Com-Pac International, Inc.Apparatus for sealing film including sealing head with wedge-shaped lower-portion
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US5198055 *Nov 8, 1991Mar 30, 1993Reynolds Consumer Products, Inc.Method of forming recloseable packages, profiles used therein, and packages produced thereby
US5366294 *Dec 2, 1993Nov 22, 1994Reynolds Consumer Products, Inc.Recloseable package having recloseable profile strips with a heat barrier
US5397182 *Oct 13, 1993Mar 14, 1995Reynolds Consumer Products Inc.Write-on profile strips for recloseable plastic storage bags
US5599415 *Jul 11, 1995Feb 4, 1997Reynolds Consumer Products Inc.Method of thermally splicing zippers
US5672234 *Apr 28, 1995Sep 30, 1997Park-Air CorporationZipper fusing machine for attaching zipper material to a plastic web
US5775812 *Nov 20, 1996Jul 7, 1998Tenneco PackagingTamper-evident reclosable plastic bag with breakaway slider
US5783027 *May 21, 1997Jul 21, 1998Park-Air CorporationZipper fusing machine for attaching zipper material to a plastic web
US5833791 *Aug 16, 1996Nov 10, 1998Tenneco PackagingConforming end stops for a plastic zipper
US5851070 *Dec 5, 1996Dec 22, 1998Tenneco Packaging Inc.Seals for plastic bags
US5867875 *Apr 16, 1998Feb 9, 1999Tenneco Packaging Inc.Foldable zipper slider with improved compression-type latch
US5896627 *Sep 26, 1997Apr 27, 1999Tenneco Packaging Inc.High-strength slider for a reclosable bag
US5911508 *Nov 10, 1997Jun 15, 1999Dobreski; David V.Vented reclosable bag
US5919535 *Dec 5, 1996Jul 6, 1999Tenneco PackagingFins for plastic bags
US5924173 *Aug 16, 1996Jul 20, 1999Tenneco PackagingEnd posts for plastic zipper
US5956924 *Nov 7, 1997Sep 28, 1999Rcl CorporationMethod and apparatus for placing a product in a flexible recloseable container
US5964532 *Oct 15, 1997Oct 12, 1999Tenneco Packaging Inc.Reclosable fastener strip with tamper evident feature
US6010244 *Apr 21, 1999Jan 4, 2000Tenneco Packaging Inc.Vented reclosable bag
US6071011Aug 12, 1999Jun 6, 2000Tenneco Packaging, Inc.Fill-through-the-top package
US6148588Dec 17, 1999Nov 21, 2000Pactiv CorporationFill-through-the-top package and method and apparatus for making the same
US6149302 *Sep 13, 1999Nov 21, 2000Taheri; NossiPlastic bag with tamper-evident closure
US6209287Aug 6, 1999Apr 3, 2001Huntsman Kcl CorporationMethod and apparatus for placing a product in a flexible recloseable container
US6216423Jan 28, 2000Apr 17, 2001Huntsman Kcl CorporationMethod and apparatus for placing a product in a flexible recloseable container
US6217216Oct 21, 1999Apr 17, 2001Nossi TaheriReclosable plastic bag with non-perforated tear zone
US6248050Apr 5, 1999Jun 19, 2001Esselte CorporationMethod of making a hanging file folder and the folder made thereby
US6248442Dec 31, 1998Jun 19, 2001Mobil Oil CorporationEasy opening hermetically sealed film
US6279298Oct 21, 1999Aug 28, 2001Pactiv CorporationFill-through-the-top package and method and apparatus for making the same
US6286999May 11, 1999Sep 11, 2001Pactiv CorporationTamper-evident reclosable bag
US6290795 *Sep 10, 1998Sep 18, 2001Murray Edward Bruce LeightonSplicing unit and method of splicing
US6350058 *May 4, 2000Feb 26, 2002Illinois Tool Works Inc.Partially secured four flange zipper strip for transverse direction
US6363692Feb 28, 2001Apr 2, 2002Pliant CorporationMethod and apparatus for placing a product in a flexible recloseable container
US6376035May 10, 1999Apr 23, 2002Pactiv CorporationZipper fins for plastic bags
US6419391May 17, 2001Jul 16, 2002Pactiv CorporationReclosable bags having a tamper evident stepped member
US6431240Aug 8, 2001Aug 13, 2002Supreme Plastics Holdings LimitedSplicing unit and method of splicing
US6438926Dec 17, 2001Aug 27, 2002Pliant CorporationMethod and apparatus for placing a product in a flexible recloseable container
US6439770May 17, 2001Aug 27, 2002Pactiv CorporationReclosable bags having a tamper-evident retaining member extending through a slider
US6439771Jun 13, 2000Aug 27, 2002Webster Industries Division Chelsea Industries, Inc.Zippered resealable closure
US6460238Jul 24, 2001Oct 8, 2002Pactiv CorporationPlastic bag slider and end termination installation assembly and method
US6494018 *Aug 9, 2000Dec 17, 2002Pactiv CorporationMethod and apparatus for guiding a fastener in a bag making machine
US6499272Feb 27, 2001Dec 31, 2002Huntsman Kcl CorporationMethod for placing a product in a flexible recloseable container
US6571850May 1, 2001Jun 3, 2003V-Tek IncorporatedFloating anvil useable against a heat sealing shoe
US6575625Jul 27, 2001Jun 10, 2003Pactiv CorporationReclosable bags having a removable member encapsulating a slider
US6611996Jul 2, 2001Sep 2, 2003Pactiv CorporationSlider for reclosable fastener
US6652436Nov 3, 2000Nov 25, 2003Innoflex IncorporatedMethod of making tamper-evident package with slider zipper
US6663283May 18, 2001Dec 16, 2003Pactiv CorporationReclosable bags having a tamper-evident member extending over a zipper proximate to a slider
US6712509Mar 21, 2002Mar 30, 2004Pactiv CorporationReclosable bag having tamper-evident member attached to body panels along a line of weakness located below the rib and groove profiles of the bag zipper
US6713152Sep 7, 2001Mar 30, 2004Pactiv CorporationFins and profiles for plastic bags
US6721999Apr 29, 2002Apr 20, 2004Absolute Closure Innovations, Inc.Device for creating a seal between fabrics or other materials
US6739370Jan 21, 2003May 25, 2004V-Tek IncorporatedFloating heated packaging shoe
US6780146Sep 17, 2002Aug 24, 2004Pactiv CorporationMethods for applying sliders to reclosable plastic bags
US6821589Jan 14, 2002Nov 23, 2004Pactiv CorporationFasteners with fin portions
US6842973 *Mar 29, 2002Jan 18, 2005Illinois Tool Works Inc.Apparatus for attaching sliders onto zipper bags and film
US6907713Dec 19, 2002Jun 21, 2005Pliant CorporationMethod and apparatus for placing a product in a flexible recloseable container
US6918230Dec 19, 2002Jul 19, 2005Illinois Tool Works Inc.Method and apparatus for placing a product in a flexible recloseable container
US6925779Aug 1, 2002Aug 9, 2005Illinois Tool Works Inc.Method and apparatus for placing a product in a flexible recloseable container
US6962034Aug 30, 2002Nov 8, 2005Illinois Tool Works Inc.Apparatus for flexible recloseable containers
US7052181Jun 11, 2003May 30, 2006S.C. Johnson Home Storage, Inc.Zippered bag having a pair of fastener strips
US7101079Dec 29, 2000Sep 5, 2006Sargento Foods, Inc.Resealable bag for filling with food product(s) and method
US7200911Aug 20, 2004Apr 10, 2007Pactiv CorporationMethods for applying sliders to reclosable plastic bags
US7228608Aug 23, 2004Jun 12, 2007Pactiv CorporationMethods for applying sliders to reclosable plastic bags
US7254873Aug 26, 2002Aug 14, 2007Illinois Tool Works, Inc.Scored tamper evident fastener tape
US7320662Feb 5, 2004Jan 22, 2008Illinois Tool Works, Inc.Method for manufacturing a flexible recloseable container
US7383675Nov 7, 2002Jun 10, 2008Illinois Tool Works, Inc.Method and apparatus for placing a product in a flexible recloseable container
US7437805Jun 23, 2006Oct 21, 2008Edward Alan BerichReclosable storage bag closure with internal valving
US7451530Oct 25, 2005Nov 18, 2008Gore Enterprise Holdings, Inc.Device for creating a seal between fabrics or other materials
US7506488Apr 26, 2007Mar 24, 2009Pactiv CorporationMethods for applying sliders to reclosable plastic bags
US7536758Mar 17, 2004May 26, 2009Gore Enterprise Holdings, Inc.Device for creating a seal between fabrics or other materials
US7540662Apr 1, 2003Jun 2, 2009Illinois Tool Works Inc.Flexible package including a docking station formed from a plurality of closely spaced slits
US7574780Oct 25, 2005Aug 18, 2009Gore Enterprise Holdings, Inc.Device for creating a seal between fabrics or other materials
US7703184Oct 13, 2008Apr 27, 2010Gore Enterprise Holdings, Inc.Device for creating a seal between fabrics or other materials
US7832065Jun 27, 2007Nov 16, 2010Gore Enterprise Holdings, Inc.Device for creating a seal between fabrics or other materials
US7896152Oct 2, 2009Mar 1, 2011Bruhl Sheila AClothing, jewelry and accessories coordinator
US8070359Jul 10, 2007Dec 6, 2011Thunderbird Global Enterprises, LlcPlastic bag with pour spout and reinforced bottom end
US8127517Jul 8, 2005Mar 6, 2012Illinois Tool Works Inc.Method and apparatus for placing a product in a flexible recloseable container
US8157444Jun 29, 2007Apr 17, 2012The Glad Products CompanyBag with improved features
US8176602 *May 24, 2011May 15, 2012Edward Alan BerichReclosable storage bag closure with internal valving
US8348511Nov 8, 2011Jan 8, 2013The Glad Products CompanyBag with improved features
US8523437Nov 20, 2002Sep 3, 2013Sargento Foods, Inc.Resealable bag for filling with food product (s) and method
US8727620 *Sep 28, 2012May 20, 2014S.C. Johnson & Son, Inc.Storage bag with dimple features
US8926179Jul 27, 2010Jan 6, 2015S.C. Johnson & Son, Inc.Closure mechanism with multiple frequency feedback
US9434514Dec 2, 2014Sep 6, 2016S. C. Johnson & Son, Inc.Closure mechanism with multiple frequency feedback
US20030074861 *Aug 30, 2002Apr 24, 2003Thieman Ronald G.Method and apparatus for placing a product in a flexible recloseable container
US20030183314 *Mar 29, 2002Oct 2, 2003Lawrence ShareApparatus for attaching sliders onto zipper bags and film
US20030220179 *Dec 19, 2002Nov 27, 2003Thieman Ronald G.Method and apparatus for placing a product in a flexible recloseable container
US20030220180 *Dec 19, 2002Nov 27, 2003Thieman Ronald G.Method and apparatus for placing a product in a flexible recloseable container
US20040000124 *Nov 7, 2002Jan 1, 2004Thieman Ronald G.Method and apparatus for placing a product in a flexible recloseable container
US20040074058 *Apr 1, 2003Apr 22, 2004Thieman Ronald G.Method and apparatus for placing a product in a flexible recloseable container
US20040086604 *Oct 21, 2003May 6, 2004Grandey Kevin T.Package having recorded audio pattern
US20040187273 *Mar 17, 2004Sep 30, 2004Absolute Closure Innovations, Inc.Device for creating a seal between fabrics or other materials
US20040252916 *Jun 11, 2003Dec 16, 2004S.C. Johnson & Son, Inc.Zippered bag having a pair of fastener strips
US20050280181 *Jun 18, 2004Dec 22, 2005Turvey Robert RApparatus for and method of forming indentations in a closure strip
US20050281492 *Jun 18, 2004Dec 22, 2005Turvey Robert RPouch and closure for a pouch
US20060037180 *Oct 25, 2005Feb 23, 2006Absolute Closure Innovations, Inc.Device for creating a seal between fabrics or other materials
US20060107500 *Oct 25, 2005May 25, 2006Absolute Closure Innovations, Inc.Device for creating a seal between fabrics or other materials
US20070280563 *May 31, 2006Dec 6, 2007Illinois Tool Works Inc.Zipper seal packages with seals with shaped pattern
US20080022496 *Jun 27, 2007Jan 31, 2008Ben MeagerDevice for creating a seal between fabrics or other materials
US20080124008 *Nov 19, 2007May 29, 2008Ben MeagerDevices and methods for forming a closure between fabrics and/or other materials
US20080271298 *Jan 10, 2008Nov 6, 2008Benjamin MeagerDevice for creating a seal between fabrics and/or other materials and methods of making and using the same
US20090089983 *Oct 13, 2008Apr 9, 2009Ben MeagerDevice for creating a seal between fabrics or other materials
US20090199369 *Apr 14, 2009Aug 13, 2009Ben MeagerDevice For Creating A Seal Between Fabrics or Other Materials
US20090211852 *Sep 23, 2008Aug 27, 2009Hannon Gregory ESelf-lubricating fasteners
US20090232422 *Jun 29, 2007Sep 17, 2009Broering Shaun TBag with improved features
USD723384Mar 15, 2013Mar 3, 2015S.C. Johnson & Son, Inc.Storage bag
USD723386Mar 15, 2013Mar 3, 2015S.C. Johnson & Son, Inc.Storage bag
USD723936Mar 15, 2013Mar 10, 2015S.C. Johnson & Son, Inc.Storage bag
USD723937Mar 15, 2013Mar 10, 2015S.C. Johnson & Son, Inc.Storage bag
USD723939Mar 15, 2013Mar 10, 2015S.C. Johnson & Son, Inc.Storage bag
USD723940Mar 15, 2013Mar 10, 2015S.C. Johnson & Son, Inc.Storage bag
USD724442Mar 15, 2013Mar 17, 2015S.C. Johnson & Son, Inc.Storage bag
USD724955Mar 15, 2013Mar 24, 2015S.C. Johnson & Son, Inc.Storage bag
USD742247Mar 15, 2013Nov 3, 2015S.C. Johnson & Son, Inc.Storage bag
USD747218Dec 2, 2014Jan 12, 2016S.C. Johnson & Son, Inc.Storage bag
WO2008008641A2 *Jun 29, 2007Jan 17, 2008The Glad Products CompanyBag with improved features
Classifications
U.S. Classification383/63, 156/66, 156/84, 156/183
International ClassificationB31B1/74, B65D33/25, B31B19/90, B29C65/02, B31B1/90, A44B19/16, B29C65/00, A44B19/42, B29L5/00, B65D33/00
Cooperative ClassificationB31B1/00, B31B2237/10, B31B2219/22, B31B2237/406, B65D33/2591, B31B2219/9016, A44B19/16
European ClassificationB31B19/90, B31B1/74, B65D33/25C
Legal Events
DateCodeEventDescription
Mar 22, 1991ASAssignment
Owner name: MOBIL OIL CORPORATION, A NY CORP.
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:HERRINGTON, F. JOHN JR.;REEL/FRAME:005653/0446
Effective date: 19910311
Jan 22, 1996FPAYFee payment
Year of fee payment: 4
Apr 3, 2000FPAYFee payment
Year of fee payment: 8
Mar 31, 2004FPAYFee payment
Year of fee payment: 12
Dec 17, 2010ASAssignment
Owner name: THE BANK OF NEW YORK MELLON, AS COLLATERAL AGENT,
Free format text: SECURITY AGREEMENT;ASSIGNORS:PACTIV CORPORATION;NEWSPRING INDUSTRIAL CORP.;PRAIRIE PACKAGING, INC.;AND OTHERS;REEL/FRAME:025521/0280
Effective date: 20101116